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The Chamberlain Group, Inc.
A DUCHOSSOIS ENTERPRISE
TM
845 Larch Avenue
Elmhurst, Illinois 60126-1196
Complies with UL 325
Regulations effective
®
January 1, 1993
Garage Door Opener
OWNER'S MANUAL
Model 1280
- 1/2 HP -
For Residential Use Only
Please read this manual and the enclosed safety materials carefully!
Fasten the manual near the garage door after installation.
®
The door WILL NOT CLOSE unless the Protector System is connected and
properly aligned
Periodic checks and adjustment of the o
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Contents Page Contents Page ® A review of safety alert symbols.............................2 The Protector System safety reversing sensor information.................17 Safety information regarding garage door locks and ropes..............................................................3 Install the safety reversing sensor.................18,19 Testing your garage door for sticking, binding Fasten door bracket (sectional door)..................20 and balance.....................................
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CAUTION WARNING An unbalanced garage door might not reverse To avoid damage to the garage door and when required and someone under the door opener, disable locks before installing and could be seriously injured or killed. operating the opener. Use a wood screw or nail to hold locks in the "open" (unlocked) If your garage door binds, sticks or is out of balance, call for professional garage door position. service. Garage doors, door springs, cables, Operation at other than 120V 60 Hz will cause
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FINISHED CEILING
Support bracket
& fastening
hardware is required.
See page 13. Before you begin, survey your garage area to see whether any of the conditions below apply to your installation. SECTIONAL Door or ONE-PIECE Door with Track Installation FINISHED CEILING Support bracket &
fastening hardware
is required.
Horizontal and vertical reinforcement
See page 13. is needed for lightweight garage doors
Slack in belt tension
(fiberglass, steel, aluminum, door with glass panels, etc.).
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LOCK LIGHT Carton Inventory Your garage door opener is packaged in two cartons which contain all parts illustrated below. If anything is missing, carefully check the packing material. Parts may be "stuck" in the foam. Hardware is listed on page 4. Belt Cap Retainer Remote Control Remote Control Multi-Function Transmitter (1) Transmitter Visor Clip Door Control Panel with 12V battery Styrofoam Belt Light Lens (2) 2-Conductor Bell Wire White & White/Red One-Piece T-rail Trolley Belt Pulley Brac
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The Chamberlain Group, Inc.
Attach Tee Rail To Opener Chassis
Liftmaster Synchro Drive GDO (Belt)
WARNING WARNING 3/13/92 - 6/2/92 - 6/3/92 USE ONLY THIS
TYPE AND SIZE
SCREW Assembly Section: Pages 6 - 7 ASSEMBLY STEP 1 CAUTION Attach the T-Rail To the Opener To fasten rail, use only those screws mounted The Chamberlain Group, Inc.
in the top of the opener. Any other screws will Liftmaster Synchro Drive
cause serious damage to the opener. Spring Trolley Nut Assembly
Washered Screw
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ASSEMBLY STEP 3 WARNING Attach the Belt Cap Retainer Serious injury can result if fingers become entangled in moving opener sprocket. Attach sprocket cover securely. Never operate opener • Position the belt cap retainer over the opener while your hand is near the opener sprocket. sprocket so the two holes in cap align with the two holes in mounting plate. Attach with #8x3/8" hex screws provided. Hex Screws # 8 x 3/8" Belt Cap Retainer Opener Sprocket Mounting Plate Hardware Shown Actual Size Bel
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Installation Section: Pages 8 – 23 Installation Step 1 WARNING Determine Header Bracket Location If the header bracket is not rigidly fastened to Installation procedures vary according to a structural support on the header wall or garage door types. Follow the instructions ceiling, the safety reverse system may not which apply to your door. work properly (see page 26). The door might not reverse when required, and could cause serious injury or death. The garage door springs, cables, pulleys, SE
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ONE-PIECE Door Without Track Read the Safety Instructions on page 8. They also apply to doors without tracks. Unfinished
Header Wall Ceiling Vertical
Centerline 2x4 • Close the door and mark the Structural Supports inside vertical centerline of your garage door. Extend the line onto the header wall above door. If headroom clearance is 2x4
minimal, you can install the Vertical
Header Support Centerline of
header bracket on the ceiling. Garage Door See page 10. OPTIONAL CEILING MOUNT
FOR HEA
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You can attach the header bracket either to the Installation Step 2 wall above the garage door, or to the ceiling. Follow the instructions which will work best for Install the Header Bracket your particular requirements. Fasten the Header Bracket to the Wall Mounting New Header Bracket
• Center the bracket on the vertical guideline with • Mark either set of bracket holes (do not use the 10/16/91 - 10/26/91 - 4/5/92 Mounting New Header Bracket
the bottom edge of the bracket on the horizontal
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INCREASE
INCREASE
DOWN
UP
TRAVEL TRAVEL Installation Step 3 Attach the T-rail to the Header Bracket • Position the opener on the garage floor below the The Chamberlain Group, Inc.
header bracket. Use packing material as a Liftmaster Synchro Drive
protective base. Header Wall Attach Tee Rail to Header Brack If the door spring is in the way you'll need help. Header
Have someone hold the opener securely on a 5/16/92 Bracket temporary support to allow the T-rail to clear the spring. Belt Pull
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Installation Step 4 CAUTION Position the Opener To prevent damage to steel, aluminum, Follow instructions which apply to your door fiberglass or glass panel doors, do not rest the type as illustrated. opener on the door without using a 2x4. SECTIONAL Door & ONE-PIECE Door with Track A 2x4 laid flat is convenient for setting an ideal door-to-T-rail distance. T-rail 2x4 • Raise the opener onto a stepladder. You will need help at this point if the ladder is not tall enough. • Open the door all th
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The Chamberlain Group, Inc.
Installation Step 5 WARNING WARNING Hang Opener Chassis
Hang the Opener Liftmaster Synchro Drive (Belt)
The opener could fall and injure someone if it is not properly secured. 3/13/92 Fasten the opener securely to structural supports of the garage. Two representative installations are shown. Yours may be different. Hanging brackets should be angled, Figure 1, to provide rigid support. On finished ceilings, Figure 2, attach a sturdy metal Figure 1 bracket to structu
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LOCK LIGHT WHITE RED 1 2 Installation Step 6 WARNING Install the Multi-Function Door Control Panel Children operating or playing with a garage door opener can injure themselves or others. The garage door could close and cause serious injury or death. Install the door control • Strip 1/4" of insulation from one end of the bell (or any additional push buttons) out of the wire; connect the wire to the two screw terminals reach of children and away from all moving on the back of the door control by
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NOTICE Installation Step 7 Install the Lights and the Lenses • Install a 75 watt maximum light bulb in each socket. The lights will turn ON and remain lit for approximately 4-1/2 minutes when power is Lens
connected. Then the lights will turn OFF. Guide • If the bulbs burn out prematurely due to vibration, 75 Watt Max.
replace them with "Garage Door Opener" bulbs. Light Bulb • Slide lenses into guides as shown. Snap bottom Lens Tab tabs into lens slots. • For convenience, the lenses may be ins
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Installation Step 9 WARNING Electrical Requirements To prevent electrocution or fire, installation and wiring must be in compliance with local To reduce the risk of electric shock, your garage electrical and building codes. door opener has a grounding type plug with a third grounding pin. This plug will only fit into a grounding type outlet. If the plug doesn't fit into the outlet you have, contact a qualified electrician to install the proper outlet. Right Wrong To avoid installation difficult
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® The Protector System Information you'll need before you begin the installation of the safety reversing sensor. The safety reversing sensor must be connected and aligned correctly before the garage door WARNING opener will move in the down direction. This is a required safety device and cannot be disabled. Without a properly working safety reversing sensor, persons (particularly children) could be injured or killed by a closing garage door. Read Installation procedures are the same for sectiona
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Figure 2 Installation Step 10 Garage WALL or DOOR TRACK Installation Install the Safety Reversing Sensor Mounting Bracket
(Receiving and Sending Eyes) With Square Holes
"C" Wrap Figures 2, 3 and 4 show recommended assembly #10-32x3/8"
of bracket(s) and "C" wrap based on the wall Screws #10 - 32
installation of the sensors on each side of the Lock Nuts garage door as shown on page 17, or on the garage door tracks themselves. Figure 3 Figures 5 and 6 are variations which may fit your Garage
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• Center each sensor unit in a "C" wrap with lenses Figure 7 Wing "C" Wrap pointing toward each other across the door (see Nut Figure 7). Indicator • Secure sensors with the hardware shown. Finger Light tighten the wing nut on the receiving eye to allow Sensor for final adjustment. Securely tighten the sending with Wire 1/4-20 x 1-1/2" eye wing nut. Hex Bolt • Run the wires from both sensors to the opener. Use insulated staples to secure wire to wall and Trouble Shooting ceiling. 1. If the send
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Installation Step 11 CAUTION Fasten Door Bracket To prevent damage to steel, aluminum, Follow instructions which apply to your door fiberglass or glass panel doors, always type as illustrated below or on page 21. reinforce the inside of the door both vertically and horizontally with an angle iron. A horizontal brace should be long enough to be secured to 2 vertical supports. A vertical brace should cover the height of the top panel. The illustration shows one piece of angle iron as the horizon
